An example of the world's first postage stamp, the Penny Black, is being offered at auction, Sotheby's said on Tuesday, with a price estimate of up to $8.25 million. Dating from 1840, the item is ...

The U.S. Postal Service is seeking to increase the prices of its products this summer, including the cost of a first-class stamp ... the most affordable in the world.” If approved, 1-ounce ...

WASHINGTON — The U.S. Postal Service is seeking a rate increase this summer that includes hiking the cost of a first-class stamp from 73 cents to 78 cents. The request was made on Wednesday to ...